Technical defects and remedies of the hottest ink

Technical defects and remedies of ink in printing (I)

Abstract: in normal ink, glazing oil and packaging printing or post printing finishing technology, some people always attribute the secondary waste problem in packaging and printing simply to the low performance or poor adaptability of the quality of printing materials without vibration or the quality of ink or glazing oil (commonly known as paint). The reason why printers shirk it righteously is that they do not scientifically and systematically learn and master the knowledge of packaging and printing technology and finishing technology

key words: packaging and printing technology defects ink remedy finishing technology knowledge Polish quality suitability

I. Introduction

in the normal ink, polish and packaging printing or post printing finishing through the correct operation of finishing technology, some people simply attribute the secondary waste problems in packaging and printing to the low quality of substrate or ink or Polish (commonly known as coating) or poor suitability. The reason why printers shirk it righteously is that they do not scientifically and systematically learn and master the knowledge of packaging and printing technology and finishing technology

through nearly three decades of follow-up service on ink production and printing operation technology across the country, the author summarizes the technical defects and remedial plans of the recent 16th National Congress. Practice has proved that the performance of ink or varnish, the nature of substrate, and the skills of operators are the three main reasons for technical defects. In order to solve these problems, I will talk about my views from the following eight aspects. So what is the difference between these two experiments? Next, Shandong StarTech will make a simple introduction

II. Several major defects of ink or glazing oil products. III. how to maintain the hardness tester:

1. During the production and storage of packaging printing ink and glazing oil, sedimentation, precipitation, gelatinization, tackiness, coarsening, thickening, skinning, blooming, color mixing, discoloration, fading, pigment, filler sedimentation and caking often occur. Poor dispersion of pigments, poor compatibility of resins, improper mixing of solvents, production, storage, swelling and gel of pigments. These defects seriously hinder the normal production, storage and use of ink

2. In the process of packaging, printing, coating and finishing, there are often sagging, ink film whitening, color bleeding, floating, graphic migration, deformation, ink film softening, cracks, orange peel, wrinkling, no flatness, bottom biting, color mixing, shrinkage, edge shrinking, pinholes, blistering, side light rainbow, yellowing, fading, etc

3. After printing and post printing finishing, there are often discoloration, fading, chalking, cracks, ink layer peeling and falling off, blistering, corruption, pinholes, frosting, atomization, etc

the former and the latter are mainly related to the quality of packaging printing ink or varnish, and the middle is mainly related to the quality of ink or varnish, printing and finishing process design, finishing quality management, printing, finishing environment, etc. Therefore, the development and production personnel of ink and varnish must understand the differences between packaging, printing and finishing products. Different production processes and environmental requirements will lead to different inks or varnishes. For example, the possible defects will not be the same due to different temperatures in spring, summer, autumn and winter, different humidity in coastal areas and plateaus, different sunny weather and plum rain seasons, different printing machinery or finishing and coating machinery, and different drying (infrared, ultraviolet, etc.) conditions

Hunan packaging, Liu Jiaju